Anthropic
Safety-forward AI lab founded by former OpenAI researchers Dario and Daniela Amodei. Ships the Claude family of models (Opus, Sonnet, Haiku) and the Claude Code developer tool. Constitutional-AI training and interpretability research are its signature technical bets.
3 tools in the directory
Claude
FeaturedWriting · Claude Opus / Sonnet
9.6
Anthropic's flagship assistant for long-form writing, analysis, and coding.
Freemium· Free tier; Pro $20/mo; Max $100–$200/molong-form writingsummarization
Claude Agent SDK
Agents · Claude Opus / Sonnet
8.6
Anthropic's official SDK for building autonomous Claude agents.
Free· Free SDK; API usage billed at Claude ratesClaude agentstool use
Claude Code
Coding · Claude (Opus / Sonnet / Haiku)
8.2
Anthropic's agentic coding tool that reads, edits, and ships code from the terminal, IDE, or web.
Freemium· Pro $17-20/mo; Max 5x $100/mo; Max 20x $200/mo; API meteredagentic-codingcodebase-refactor